on the way down to Yuma last fall we stopped in Twin Falls Id ans asked if it was OK to stay over night. Manger was very nice and sasid OK. we found a place way in the back, we were the first ones there so we got to pick the best spot. like others I have to open the slides to move in my TT and we didn't get much sleep that night. others had the same Idea we had and they and some kid with a very loud exhaust pipe kept us awake most of the night. I think this kid made it his job to drive the parking lot all night long as fast as he could. That was the only time we stayed in a Wal Mart. we found camp grounds after that by using our GPS